Which Filter Series?


sportyman531

Link Posted 16/10/2016 - 20:55
I am using a K3 and K5 and my widest focal length is 17mm on my Tamron 17-50 f2.8 lens.
Which series of Cokin filters should I use?
I am looking to use graduated filters.
flickr ID: SteveW46243 or sw46246
DA AL 35mm f2.4, K3,18-135 WR, DA 55-300, Pentax KX, K5 x 2, 18-50 50-200 kit lenses, Tamron 17-50 f2.8, Fuji X10, 2x Mamiya 1000s 2x 80mm f2.8, 150mm f3.5, 210mm f4, Yashica 124G TLR, 2x Yashica FX3 Super 2000, Tamron 28mm f2.8, 90mm SP f2.5, 135mm f2.5, Olympus 35RC, 2x Yashica FX2, Kodak Pocket Instamatic, Kodak Box Brownie

StephenHampshire

Link Posted 17/10/2016 - 11:52
I use P series filters and holders on my Tamron 17-50, and other lenses up to 77mm filter diameter. I have grad ND and full ND filters, both Cokin and Kood
Everything Changes
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cardiffgareth

Link Posted 17/10/2016 - 12:24
Yes, P series would be the best bet. The two things that govern what size is best is a) the filter diameter of the lens and b) the angle of view from the lens.

I use the P system with all my lenses, even the 10-20mm Sigma. It does mean the holder vignettes into the image at extreme wide angle so I know that I can use the filter holder with focal lengths from 13-14mm upwards. With your 17-50mm you'll be fine
Gareth
Welsh Photographer

My outfit: K1 gripped - Pentax D FA 24-70mm - Sigma 70-200mm OS HSM - Pentax modified DA* 60-250mm f4 - Irix 15mm Firefly - Pentax FA 35mm - FA 50mm - Tamron SP 90mm macro - Pentax AF 540 FGZ II

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sportyman531

Link Posted 18/10/2016 - 22:06
Thanks for the replies guys, that clears up my concerns nicely!
flickr ID: SteveW46243 or sw46246
DA AL 35mm f2.4, K3,18-135 WR, DA 55-300, Pentax KX, K5 x 2, 18-50 50-200 kit lenses, Tamron 17-50 f2.8, Fuji X10, 2x Mamiya 1000s 2x 80mm f2.8, 150mm f3.5, 210mm f4, Yashica 124G TLR, 2x Yashica FX3 Super 2000, Tamron 28mm f2.8, 90mm SP f2.5, 135mm f2.5, Olympus 35RC, 2x Yashica FX2, Kodak Pocket Instamatic, Kodak Box Brownie

stub

Link Posted 19/10/2016 - 11:47
Have to disagree a little here. As I personally think that for graduated filters the "Z" series is the way to go. As it illimates the very heavy vignetting, when using the very wide angled lenses. Though for normal grad filters and polorizers. I prefer round screwin ones. With step down rings to smaller diameter lenses. As there is far less light leakage.
K-1Gripped K-1 ungripped K-5ii K7 Various lenses

Stuart..

LennyBloke

Link Posted 19/10/2016 - 13:02
Like a lot of things it's all a balance. The larger filter systems (Z & Lee) cost more and are physically larger while the medium sized system (P, Hitech 85)) are a good compromise in that they will cover most DSLR lenses.

I've been through Cokin P, Hitech 85's and have ended up with Lee - it's the most expensive option but it's at the top end of the quality range and doesn't have a notable colour cast when stacking filters. If you can afford it (long, careful second hand scouting is probably the least expensive way) then I'd recommend Lee
LennyBloke

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sportyman531

Link Posted 21/10/2016 - 12:11
Last night I joined my local club, Bury Photographic Society, a move which I would recommend to anyone.
There I asked a longstanding member who combines fell walking with landscape photography and his reply was similar to those above, it depends on the filter diameter of the lens and the angle of view. He said that P series is OK for 17mm at a filter diameter of 67mm and guess what? that is exactly the size on the Tamron 17 - 50.
flickr ID: SteveW46243 or sw46246
DA AL 35mm f2.4, K3,18-135 WR, DA 55-300, Pentax KX, K5 x 2, 18-50 50-200 kit lenses, Tamron 17-50 f2.8, Fuji X10, 2x Mamiya 1000s 2x 80mm f2.8, 150mm f3.5, 210mm f4, Yashica 124G TLR, 2x Yashica FX3 Super 2000, Tamron 28mm f2.8, 90mm SP f2.5, 135mm f2.5, Olympus 35RC, 2x Yashica FX2, Kodak Pocket Instamatic, Kodak Box Brownie
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